Video Experimental Relacionado
Updated: Jul 12, 2026
07:30
Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography
Published on: November 14, 2025
Datados grabados en roca de la cueva de Wonderwerk, Sudáfrica
Science (New York, N.Y.)
|October 2, 1981
Resumen
Los grabados rupestres en Sudáfrica tienen al menos 10.000 años. Este hallazgo proviene de la datación por radiocarbono de las piedras grabadas encontradas en la cueva de Wonderwerk, lo que proporciona nuevos conocimientos sobre el arte rupestre antiguo.
Área de la Ciencia:
- Arqueología Arqueología.
- Estudios de arte de la roca Estudios de arte de la roca
- La cronometría es la cronometría.
Sus antecedentes:
- El arte rupestre es un aspecto significativo del patrimonio cultural sudafricano.
- Comprender la edad del arte rupestre proporciona información sobre el comportamiento humano temprano y el simbolismo.
Objetivo del estudio:
- Para determinar la edad mínima de los grabados rupestres en Sudáfrica.
- Establecer un marco cronológico para las primeras tradiciones del arte rupestre.
Principales métodos:
- La datación por radiocarbono de las piedras grabadas.
- Análisis de los depósitos arqueológicos en la cueva de Wonderwerk.
Principales resultados:
- Las piedras grabadas de depósitos sellados en la cueva de Wonderwerk dieron fechas de radiocarbono.
- Estas fechas indican que los grabados en la roca de la región tienen al menos 10.000 años.
Conclusiones:
- El grabado en roca en Sudáfrica tiene una historia profunda, que se remonta al menos a 10 milenios.
- La cueva de Wonderwerk proporciona evidencia crucial para la antigüedad del arte rupestre sudafricano.
Videos de Conceptos Relacionados
02:56The Fossil Record
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
04:49Robbers Cave
During the 1950s, the landmark Robbers Cave experiment demonstrated that when groups must compete with one another, intergroup conflict, hostility, and even violence may result. At the Oklahoman summer camp, two troops of boys—termed the Rattlers and the Eagles—took part in a week-long tournament. During this time, their negativity culminated in derogatory name-calling, fistfights, and even vandalism and destruction of property. However, this work also revealed that such tension could be...
01:15Quarrying of Stone
Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
01:26Minerals
Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
01:26Bone Markings
Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
01:29Stone Masonry
Stone masonry is a construction technique that uses individual stones to build structures and can be categorized into two main types: rubble and ashlar. Rubble masonry uses uneven, naturally shaped stones such as river rocks or fragments from quarries. This method often requires the mason to select and possibly shape each stone to fit the designated space, ensuring a proper build, even with irregular stone sizes and shapes. Ashlar masonry, on the other hand, employs uniformly cut stones that...